[FOM] Do hypersets have types?
SandyHodges at attbi.com
Thu Sep 26 15:41:03 EDT 2002
By the ordinary concept of a hierarchy of types, a set of type N
contains only sets of type N-1 or less. This definition obviously
won't work for hypersets. But there might be some concept of type for
which, say, the hyperset which contains itself and the null set gets a
fairly low type number. The question is, is there such a definition
such that the set of all type N hypersets which are not elements of
themselves, is always of type > N?
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Sandy Hodges / Alameda, California, USA
mail to SandyHodges at attbi.com will reach me.
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